Paper-making machine



May 10,1927. E E BERRY 1,627,882

PAPER MAKING MACHINE origin-a1 Filed April v, 192s 3 sheets-sheet 1 lill/11111111111l/llllllllllll/llllllllllllllll/lllllu/l/lfllll/lr1/lllIl1111111111101"llll/llllIllllllIIllllllllllllll/ ggfgfgf May 10, 1927.

E. E. BERRY PAPER MAKING MACHINE original Filed April '7, 1923 3 Sheets-Sheet 2 NNN NNI

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May 10 1927: 1,627,8.82

' E. E. BERRY PAPER MAKING MACHINE Original Filed April 7, 1923 Y 3 Sheets-Sheet 3 e Q QQQ@ @@@Q Q11- y 'ao vPatented May 10, 1927.

UNITED STATES 1,627,882` PATENT OFFICE.

EARL E.' BERRY, OF BELOIT, WISCONSIN, ASSIGNOR TO BELOIT IRON WORKS, OF BELOIT, WISCONSIN, A CORPORATION F WISCONSIN.

PAPER-MAKING MACHINE.

Application filed April 7, 1923, Serial No. 630,484. Renewed April 27, 1925.

One of the objects of the invention is to provide a simple and practical constructionot' suction moldfor paper making machines.

Another object of the invention is to provide a construction which will make it possible to run the cylinder at high speeds, higher than heretofore employed. I

Another object ot' the invention is to arrange for removing the sheet from the cylinder mold without the aid of couch roll or felt.

In the accompanying drawings Fig. 1 is a vertical section of a paper making ma; chine embodying my invention, showing the cylinder mold, the vat and head box;

Fig. 2 is a longitudinal section taken lengthwise of the mold and vat;

Fig. 3 is across section of. a portion'ot' the cylinder mold; v

Fig. 4f is a plan view of part-of the same; and

Figs. 5 and 6 are'sectional views of a portion of the cylinder mold rwall on an enlarged scale. I

Referring to the drawings, the cylinder 'mold constructionconsists of a cylinder 1,

having longitudinally extending grooves 2 between which are projections 3, said projections terminating in sharp edges and each groove having communication with interior of cylinder through the holes 4. The projections 3 are cut crosswise by special grooves running circumferentially of cylinder and which support a spirally wound wire 5, the surface of which isA even with edge ot' projections (Fig. 5). The edges of projections 3 and the outside surface of spiral wires support wire webs 6 and 7. The ends ot' cylinder` mold are closed by the circular heads 8 which have openings with removable covers 9. The center of each head form-s a of cylinder; said box being divided into two compartments 1421 and 14D, and held against the cylinder by the adjustable springs 15 and adjustable stops 15, being provided so as to regulate the pressure of said box against the cylinder. One of the compartments 14 in box 14: is supplied with compressed air through the pipe 16, thereby relieving a portion of the web from the internal suction of the mold and providing a place for removing the sheet. A st ationary hollow shaft 17 forms journals at the ends upon which the cylinder mold rotates. Said hollow shaft is divided int-o two compartments 17a and 17b by a longitudinal portion extending diametrically across same, the lower compartment 17b having communication with lower part of cylinder by the pipes 18 for the purpose of removing the liquid drawn to the inside of mold. The upper compartment has communication with upper part of mold by the pipes 19 for exhausting the air from inside of mold, the ends of these pipes having hoods 20 for keeping the liquid from getting into air suction lines.

The ends of hollow shaft 17 are support- 80 ed in the pedestals 21 which are divided interiorly into compartments 21a and 21b f which correspond to compartments 17a and 17 b in hollow shaft 17, and form a continuous passageway thereto. The pedestals are held tightly against the ends of shaft 17 by bolts 22 forming a comparatively air tight joint between the two. A pipe'23 leading from the lower chamber 21b of the pedestal 21 is connected to a water pump or other suit- 9o able means for 4removing the liquid from the interior of cylinder, and another pipe 25 leading from upper chamber ot pedestal is connected to a suitable air` suction pump for exhausting the air from the interior of cylinder, the suction exerted in pipes 18 being' greater than that exerted in pipes 19 so as to lift water in said pipes 18. Thus substantially the entire interior of the cylinder is subject to the suction and to the same 10" suction, and consequently the paper is formed and dehydrated by the same suction. This has the advantage of giving continuity and uniformity. Also, the water which would roll down and spoil the paper, above W5 V-member 32, is pulled down into cylinder and discharged.

A partition 26 for fibre bearing liquid encloses the lower half of the cylinder mold and is so constructed that the passagewayl 27 between it and mold can be varied in size y and shape as desired. A piece of flexible material 28 is connected to outer casing of vat and allowed to rub against the web of mould, the pressure on the outside and the suction from the inside of mold holding the flexible piece of material lfirmly against the web and preventing the fibre bearing liquid from escaping at this point. A head box 29 extends much higher than ordinarily above l the vat for storing the fibre bearing liquid, said head box having an ad-'ustable gate 30 for regulating the height o liquid in head box and thereby regulating the velocity and pressure of the liquid in passageway between vat and mold. The head box 29 has communication with passageway between vat and mold by the passageway 31. By having the high head box 30, the iiow of pulp may be given the same speed of travel in passage 27 as the surface of the cylinder, thereby making a ood fibre in the paper and avoiding botching which might otherwise take place, and permits high speed on part of cylinders. This speed of travel continues to substantially the overflow. A chamber 32 is provided between head box and mold for retaining or catching the surplus liquid overflowing between vat and mold, and also the surplus liquid overowing from adjustable gate in head box. Liquid may escape from chamber 32 through the opening 33 and be pumped back to head box for re-use.

The passageway or chamber between head box and entrance to vat is provided with agitators 34.- and 35, said agitators consisting of propeller vblades revolving upon a shaft with the pitch of blades placed in opposite directions, so as to thoroughly mix and distribute the fibres in liquid. A semi-cellular iange 36 extends from side walls of vat,

A the outside surface of which is even with the outside of an extension to c linder surface. A flexible metallic strip 3'( with fabric lining engages thevtwo surfaces and forms a comparatively water tight joint thereby preventing the fibre bearing liquid leaking from the vat.

Small jets of water 38 and 394 are directed against the formed sheet of fibres on web of mold, thereby cutting even and straight edges on the sheet. The jet 39 is connected to a flexible hose and slides lengthwise of 'mold in a slotted pipe, making it possible lto move the jet across the sheet of fibres while mold is revolving and cut a wedged shaped sheet which is necessary in passing sheet to other parts of the paper making machine.

A spray pipe 40 is provided at point Where mold enters the vatand for the purpose of cleaning the web before it again enters the -bre bearing liquidsaid spray pipe has a shield plate 4,1 which prevents water spatterin'g on to sheet of paper that is being removed from mold. The sheet of paper 42 is shown passing from the web of mold to the first press felt 43 of the paper making machine, being thus taken from the roll without the use of a couch or other separate roll, thereby permitting high speed and avoiding wear on the cylinder surface. The suction removes sulicient water to release the paper, which is thus Well dried so that no pressing roll is needed.

It will be understood that changes and modifications may be made without departing from the spirit of the invention.

What I claim is:r

1. In a paper making machine, the combination of a hollow rotary perforate member having an unobstructed interior, a vat in which said member is partially immersed, suction means for withdrawing Water from the interior of said member and other suction means for reducing air pressure in said member above the water.

2. In a paper making machine, the combination of a rotary hollow perforate member having an unobstructed interior, a vat in which said member is partially immersed, suction means for withdrawing water from the botfom of said member, and other suction means for reducing air pressure in the member above the water. r

3. In a pa )er machine, the combination of a rotary hol oW perforate member having an unobstructed inferior, a vat in which said immersed, suction member is partially means for withdrawing water from the interior of the member and other Suction means for reducing air pressure in the upper portion of the member.

4. In a paper machine, the combination of a hollow rotary perforate member having an unobstructed interior, a vat in which said member is partially immersed, suction meansv for withdrawing water from the interior of the said member and other suctionI means for reducing air pressure in theinterior of said member above the level of thematerial the vat.

5. In va paper machine, the combination of a hollow rotary perforate member having an unobstructed interior, a vat in which said member is artially immersed, Suction means for with( rawing water from the interior of the said member and other suction means for reducing air pressure in the interior of said member above the level of the material in the vat, and also above the water in said member. y

(i. 1n a paper machinel the combination of a hollow rotary perforate member having an open interior, a vat in which said member is substantially one-half immersed,

yis

and means for separating the formed paper downwardly' moving 'portion of the cylindemv 130 enters the vat, whereby substantially the entire upper surface of the rotary member is available for drying the paper film.

7. In a paper machine, the combination of a rotary hollow perforate member having an unobstructed interior, a vat in which said member is partially immersed, suction means for withdrawing the water from the interior of the said member, and other suction means 'for reducing air pressure within that portion of said member on which the paper film is formed.-

8. The combination of a rotary hollow cylinder having a perforated cylindrical wall, of aA tank or `vat for paper material in which sai-d cylinder is partially immersed, means for establishing a condition of low air pressure in said Cylinder andpmeans for pneumatically withdrawing liquid from the interior of the cylinder, the means for establishing a partial vacuum in the cylinder comprising a tubular sationary shaft for the cylinder provided with apertures communicating with the interior of the cylinder and a connection for said tubular shaft for establishing communication with an air pressure reducing apparatus, and the means for withdrawing 'liquid from the cylinder comprising a separate compartment in said tubular shaft also connected with air pressure reducing apparatus, pipes extending from said compartment down to substantially the bottom of the/cylindercand pipe connections for withdrawing liquid from said compartment.

The combination of a hollow rotary cylinder having a perforated cylindrical wall` a vat for paper material in which said lwithdrawing liquid from the same.

1 0. The combination of a hollow rotary cylinder having a perforated cylindrical wall, a vat for paper material in which said cylinder `is partially immersed, a tubular4 shaft ou which the cylinder is mounted, said shaft being formed of two longitudinal compartments one above the other, the shaft being provided with outlets from -tlic upper compartment to the interior of the cylinder to permit exhaustion or `partial exhaustion of air from said interior, suction pipe connections for said compartmentsA` and the lower compartment being provided with downwardly extending pipesextending to substantially the bottom of the cylinder for withdrawing liquid from the same, said tubular shaft lbeing mounted on pedestals having hollow upper ends comprising two com part-ments whereof the upper' onesare connected with the upper compartment of the hollow shaft and the lower ones connected with the lower compartment of the hollow shaft, said pipe connections beingconnected to said pedestals so as to communicate with the compartments thereof.

ll. In a paper machine, the combination of a rotary hollow perforate member having an unobstructed interior, a vat in which said member is partially immersed, subtion means for withdrawing the water from tho interior of the said member, and other suction means for reducing air pressure within that portion of Said member on which the paper film is dried.

l2. The ycombination of a rotary hollow cylinder having a perforated cylindrical wall, a tank or' vat for paper material in which said cylinder is partially submerged, means whereby a condition of "partial vacuum may be established within the cylinder so as to cause formation ofa paper film thereon and means for neutralizing the reduced air pressure for a portion of the cylindrical wall; said means comprising a box arranged within the cylinder-and covering a portion of the cylindrical walland com. pressed air pipes leading to said box, said box having two compartments one of which is `providedV with compressed yair and the other of which covers an adjacent portion of the cylinder wall.

13. The combination of a rotary hollow cylinder having a perforated cylindrical wall, a tank or vat for paper material in which'said cylinder is partially submerged, means whereby a condition of partial vacuuin may be established within the cylinder so as to cause formation of a paper film thereon, means for neutralizing the reduced air pressure for a portion of the cylindrical wall, said means comprising a box arranged within the cylinder and covering a portion of the cylindrical wall and compressed air pipes leading to said box, said box having two compartments one of which is provided with compressed air and the other of which covers an adjacent portion of the cylinder wall, and spring controlled means for forming a tight connection between said' box and the interior of the cylinder, wall.

14. A paper machine coi'nprising a perfor-ate, hollow rotary member having ap open interior, a tubular shaft on which saidc c l I l u member isinounted, said shaft being divided `\\l'2v into upper and lower compartments, openings in the upper compartmentcommunicating with the open interior of the rotary member, a suction connection communicating-with said upper compartment for estabiso groove, said projection terminatin lishing an exhaust condition in the open interior of said rotary member, pipes extending downwardly from the lower` compartment of the tubular shaft and having their lower ends located near the bottom of the rotary member, a pump connection for the lower compartment for causing exhaust of water from the bottom of the rotary member, andl a vat for paper forming material in which said rotary member is partially immersed.

15. In a paper machine, the combination of a rotary hollow perforate member having an unobstructed interior, a vat in which said member is partially immersed, suction means for withdrawing the water from the interior of the said member, and other suction means for reducing air pressure within that portion of said member on which the paper film is formed and dried. 16. A pa er making machine having a partially su merged -hollow rotary member with an unobstructed perforatevwall and also having suction means for withdrawing water from the interiorof said membe and other.

suction means for maintaining a constant vacuous condition with`n the portion of the cylinder where theipaper is formed.v

17. A pa er ,making machine having a partially su merged hollow rotary member with an unobstructed perforate wall and also having suction means for withdrawingl Water from the interior of said member and other suction means for maintaining -a constant vacuous condition within the portion of thecylinder where 4the paper is dried.

18.A In a cylinder paper machine, a cylinder whose' outside periphery has grooves eX- tending longitudinally of same, each groove having independent communication with the vinterior ofthe cylinder, said grooves so shaped and located in reference to each other that a projection is, formed between each on the outside in a comparatively sharp e ge, each l y-projection being mtersected by spiral grooves running circumferentially of the cylinder and supporting a spirally wound wire, the spiral grooves being of such depth that outs1de of spiral wound wire is even with sharp edges of projections, thereby forming an even surface over entire outside surface of cylinder, said surface supporting one or more wire webs and forming separate com-V partments at each groove which are comparatively air tight in reference, to each other.

19. vIn a cylinder paper machine, a cylinder mold each end of which is closed by a circular head, the center of each headI having a bearing for rotating said mold upon a stationary hollow shaft, said bearing being so constructed as to form a comparatively air tight jointvbetween interior and exterior of mold, the end heads of mold having openings with air tight covers which are removable for gaining access to interior of mold.

20. A paper making machine havin a partially submerged hollow rotary mem er with an unobstructed. perforate wall and also having suction means for withdrawing water from the interior of said member, and other suction means for maintaining a constant vacuous condition within the portion of the cylinder where the paper is formed and dried.

21. In a paper making machine, the combination of a hollow rotary member having an unobstructed perforate wall, a vat in which said member is partially submerged,

suction means for withdrawing the water from the interior of the cylinder and other suction means lfor reducing air pressure in the operative portion of said member.

22.' The combination with the hollow perforate rotary cylinder, of meansfor creating a vacu'ous condition along substantially the entire inner surface of the c linder, and means for supplyingcompresse air to the inside of the cylinder at a point in the periphery of the cylinder, and means for supplying air at atmospheric pressure at an adjacent point.

23. A paper machine having a partially Isubmerged hollow rotary member with an unobstructed perforate wall or shell and.V means for maintaining a constant vacuous condition throughout the entire interior of the cylinder, excepting where the paper is taken' off and the cylinder washed. p

24. The combination with a hollow rotary perforated forming member, of a tank or vat in which the rotarv member is partially submerged, a centra tubular member around which said member revolves, said tubular member having a plurality of separate longitudinal compartments, and also having openings affording communication betweenl one ofsaid compartments and the interior of the rotary member and liquid withdrawing means carried by said tubular member and extending downwardly therefrom for conducting water upwardly from the lower portion of said member, said liquid-withdrawing means being in communication with the other compartment of said shaft.

25. The combination of a rotaryhollow perforated forming member, a tank or vat in which therotary member 'is partially submerged, a, central tubular member around which said member revolves, said tubular member having a plurality of longitudif',

- mounted, tubular members extending compartments for the withdrawing pressures,

perforated forming member, of a tank or vat in which thei'otary member is partially submerged, a central tubular member around which said member revolves, said tubular member being provided with a plurality of longitudinal compartments,` and having apertures or openings forming communication between one of said compartments and the interior of the rot-ary member, pipes attached to said tubular member and extending downwardly therefrom and in communication with another of said compartments, and chamber-ed pedestals supporting said central member and having Chambers in communication with the compartments thereof.

27. The combination with a rotary hollow perforated forming member, of a tank or vat in -which the rotary member is partially subn'icrged, a tubular supporting shaft provided with a plurality of longitudinal compartments, said shaft having apertures or openings forming communication between one of said compartments and the interior of the rotary member, pipes attached to said tubular shaft and extending therefrom and in communication with another of said compartments, chambered pedestals supporting said shaft and having chambers incommunication with the coinpartments thereof and suction pipes connected with said pedestals so as to coinmunicate with the chambers thereof.

28. A machine of the class specified coinprising a tank or vat, a rotary forming cylinder partially immersed in said tank or vat, a fixed tubular shaft on which same is down from said shaft to the lower portion of the cylinder, chambered pedestals vsupporting said shaft and connected with interior thereof, a suction device connected with said pedestals and water discharge pipes extending from said pedestals.

29. A machine of the class specified having a tank or vat, a rotary forming cylinder partially immersed in said4 tank or vat, and also having suction means for forming and dryingthe paper and .for withdrawing moisture therefrom, said suction means comprising a xed hollow shaft having separate drying and water air pipe connections to same, and water' outletvpipes for water discharge, said shaft being supported by chambered pedestals -having compartments for connection with said shaft compartments, said air and waterdischare pipes being connected with said pedesta 30. A machine ofthe class specified hav- A plurality downwardly ing a tank or -fvat, and a hollow rotary perforated forming member partially immersed in said tank or vat, and also having a centrally arranged structure provided with a plurality of longitudinally extending 'compartments and pedestals supporting said central structui'e and each provided with a plurality of chambers communicating respectively with the compartments of said central structure.

3l. A machine of the class specified having a tank or vat, and a hollow rotary perforated forming member partially immersed in said tank or vat, and also having a centrally arranged structure provided with a partments and pedestals supporting said central structure and eacli provided with a pluralitv of chambers communicatin respectively with the compartments of said central structure and pipes connected with said pedestals and communicating with the chambers thereof.

32. A machine of the class specified having a tank vor vat, anda hollow rotary perforated forming member partially immersed in said tank or vat, and also having a centrally arranged structure'provided with a plurality of longitudinally extending coinpartments onefor air and another for water and pedestals supporting said central structure and each provided with a plurality of chambers communicating respectively with the compartments of said central structure and air suction pipes connected with the pedestal chambers which communicate with the air compartment of the central structure and other pipes connected with the pedestal chambers which communicate with the water compartment of the central structure.

33 The combination of a rotary forming member, a' tubular support therefor,A sai support havin a longitudinally extending partition divi inv it into upper and lower compartments, whereof the upper compartf ment is for withdrawing -air from the u per portion of the rotary member and'tltie lower compartment is for withdrawin water from the lower portion thereof, and suction pipes communicating with the ends of said compartments, said pipes being connected to the upper ends of pedestals which l are attached to the ends of said tubular support, said pedestals havin ing continuations of thetu -u tition and dividing said pedestals into compartments communicating with said pipes. In witness whereof, I hereunto subscribe my name this 2nd day of April A. D., 1923.

` EARL E. BERRY.

of longitudinally extending comartiti'ons formar support par- 

